Following SPECPR-99 <https://openehr.atlassian.net/browse/SPECPR-99> and
this email string
<http://lists.openehr.org/pipermail/openehr-technical_lists.openehr.org/2014-August/008468.html>
from 2014, the imminent RM 1.0.4 release will include SPECRM-80
<https://openehr.atlassian.net/browse/SPECRM-80>, which improves the
documentation about /system_id/, which is recorded in the EHR and also
in AUDIT_DETAILS, i.e. on each committed version.
In response to this, I have added the following documentation to the
Architecture Overview, and will also add further text and hot links to
the specific locations in the EHR and Common parts of the RM. It would
be useful to know if this agrees with the understanding of openEHR
system implementers and users.
~~~~~~~~~~~~
6.1. The EHR System
The notion of a logical EHR /system/ is central to the openEHR
architecture. In openEHR, a system is understood as a distinct logical
repository corresponding to an organisational entity that is /legally
responsible/ for the management and governance of the healthcare data
contained within. This may be a regional health service that serves
multiple provider enterprises or a single provider enterprise such as a
larger hospital. The 'system' is therefore in general distinct from
specific applications and also from provider organisations, even if in
some cases it happens to be owned by a single provider. It is also
distinct from any underlying virtualisation infrastructure or cloud
computing facility, which may house multiple logical EHR systems in a
multi-tenant fashion. This is clear by comparing the legal
responsibilities of the infrastructure provider, which are for /generic
IT service management/ to a procurer, which may be a healthcare data
management entity. It is the latter that undertakes legal responsibility
for the content, on behalf of one or more healthcare provider organisations.
The technical criterion for identifying an EHR system is that it is the
entity that assigns version identifiers within a repository.
6.1.1. System Identity
Within the openEHR architecture, a |/system_id/| attribute is recorded
both within each patient EHR (|EHR| class), and also within the audit
created with each commit of data to an EHR (|AUDIT_DETAILS| class). This
identifier identifies the logical EHR system as described above, and may
be of any form. Common forms include the reverse domain name and plain
and structured string identifiers. The system identifier is /not assumed
to be directly processable/, but may instead be used as a key, for
example in a service maintaining location information.
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